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    <title>Title</title>
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<body>
    <div>
        <table align="center" width="800" border="1">
            <caption><h2>2016年9月份全球操作系统市场份额</h2></caption>
            <tr>
                <td colspan="2" class="top">
                    <span>星期</span>
                    <span>节次</span>
                </td>
                <td>星期一</td>
                <td>星期二</td>
                <td>星期三</td>
                <td>星期四</td>
                <td>星期五</td>
                <td>星期六</td>
            </tr>
            <tr>
                <td rowspan="5">上午</td>
                <td>早自习</td>
                <td>语文</td>
                <td>英语</td>
                <td>语文</td>
                <td>英语</td>
                <td>语文</td>
                <td></td>
            </tr>
            <tr>
                <td>第一节</td>
                <td>物理</td>
                <td>英语</td>
                <td>语文</td>
                <td>英语</td>
                <td>语文</td>
                <td>物理</td>
            </tr>
            <tr>
                <td>第二节</td>
                <td>数学</td>
                <td>语文</td>
                <td>数学</td>
                <td>数学</td>
                <td>英语</td>
                <td>数学</td>

            </tr>
            <tr>
                <td>第三节</td>
                <td>英语</td>
                <td>生物</td>
                <td>化学</td>
                <td>语文</td>
                <td>数学</td>
                <td>生物</td>
            </tr>
            <tr>
                <td>第四节</td>
                <td>化学</td>
                <td>数学</td>
                <td>英语</td>
                <td>物理</td>
                <td>体育</td>
                <td>化学</td>
            </tr>
            <tr>
                <td rowspan="3">下午</td>
                <td>第一节</td>
                <td>语文</td>
                <td>化学</td>
                <td>物理</td>
                <td>化学</td>
                <td>计算机</td>
                <td>语文</td>
            </tr>
            <tr>
                <td>第二节</td>
                <td>语文</td>
                <td>物理</td>
                <td>生物</td>
                <td>英语</td>
                <td>生物</td>
                <td>英语</td>
            </tr>
            <tr>
                <td>第三节</td>
                <td>德育</td>
                <td>数学</td>
                <td>体育</td>
                <td>生物</td>
                <td>自习</td>
                <td> </td>

            </tr>
            <tr>
                <td>晚上</td>
                <td>晚自习</td>
                <td>数学</td>
                <td>英语</td>
                <td>语文</td>
                <td>化学</td>
                <td>物理</td>
                <td> </td>
            </tr>
        </table>
    </div>
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